Brainwaves (Mind Games) (1982) [Leila Adams]: Electrocuted when her boyfriend drops her radio into the bathtub. Later on, there are momentary flashbacks to her death in Suzanna Love's psychic visions, and her body is shown again in flashback when Eve Brent describes how she found the body. (Nudity alert: Full frontal)

Equalizer 2000(1986) [Karen]: Reportedly machine-gunned in the chest by Frederick Bailey when she interrupts his attack on Richard Norton. (I haven't seen this movie myself.) (Thanks to Rodzilla)

Amazon Women on the Moon (1987) [Sharri]: Shot to death (out of camera frame) by Andrew Dice Clay when the "interactive video date" that Marc McClure watches goes horribly wrong. We only hear the gunshots, and don't see her body afterwards.